Patent US2674635A successfully refreshed from Google Patents.
US2674635A
Expired / Lapsed
US
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Production of aromatics from petroleum
Assignee: Sinclair Refining Co
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Filing: 1950-05-10
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Granted: 1954-04-06
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Expires: 1970-05-10
Abstract
No abstract record available.
Inventors
- 👤 La Vern H Beckberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:55
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF THERMALLY CONVERTING HIGHER MOLECULAR WEIGHT HYDROCARBON FRACTIONS RICH IN ALKYLATED FUSED-RING AROMATIC COMPOUNDS TO LOWER MOLECULAR WEIGHT HYDROCARBONS WHICH CONSISTS OF PASSING THE HYDROCARBON FRACTION INTO A REACTION ZONE IN THE PRESENCE OF A HYDROGENRICH GAS, THE HYDROGEN BEING PRESENT IN THE AMOUNT OF ABOUT 1 TO 20 MOLES OF HYDROGEN FOR EACH MOLE OF THE HYDROCARBON FRACTION, MAIN TAINING THE REACTION ZONE IN ABSENCE OF A SUBSTANTIALLY EFFECTIVE AMOUNT OF CATALYTIC MATERIAL AND AT A TEMPERATURE IN THE RANGE APPROXIMATING 1300* TO 2500* F. AND AT A PRESSURE IN THE RANGE APPROXIMATELY O TO 100 P.S.I.G. FOR A PERIOD ARATING THE LOWER MOLECULAR WEIGHT HYDROCARBONS FROM THE EFFLUENT REACTION PRODUCTS.
Claim 2
Independent Claim
114 words
THE METHOD OF THERMALLY CONVERTING HIGHER MOLECULAR WEIGHT HYDROCARBON FRACTIONS RICH IN ALKYLATED FUSED-RING AROMATIC COMPOUNDS TO LOWER MOLECULAR WEIGHT HYDROCARBONS WHICH CONSISTS OF PASSING THE HYDROCARBON FRACTION INTO A REACTION ZONE IN THE PRESENCE OF A HYDROGENRICH GAS, THE HYDROGEN BEING PRESENT IN THE AMOUNT OF ABOUT 1 TO 20 MOLES OF HYDROGEN FOR EACH MOLE OF THE HYDROCARBON FRACTION, MAIN TAINING THE REACTION ZONE IN ABSENCE OF A SUBSTANTIALLY EFFECTIVE AMOUNT OF CATALYTIC MATERIAL AND AT A TEMPERATURE IN THE RANGE APPROXIMATING 1300* TO 2500* F. AND AT A PRESSURE IN THE RANGE APPROXIMATELY O TO 100 P.S.I.G. FOR A PERIOD ARATING THE LOWER MOLECULAR WEIGHT HYDROCARBONS FROM THE EFFLUENT REACTION PRODUCTS.
References Cited (Backward Citations)
US2167339A
Cited
US2335596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |